I drive mine around all the time. The onlt time I had a problem was when we got stuck in Ohio on the Interstate for along time not moving. It was also very hot out. That the only time it got over 220 on me.Thats why I am putting another fan in. Never know when That might happen again. I have been in stop and go traffic before with out a problem. It just didnt like sitting there with a bunch of other cars and no air movment. I am going to also put a Koyo radiator in it.